19686355

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{83}}^1\times {\mathrm{89}}^1$

素因数の和:231

約数の個数: 32

約数和(自身を含む): 26671680

約数和(自身を除く): 6985325

約数列:

[1, 5, 13, 41, 65, 83, 89, 205, 415, 445, 533, 1079, 1157, 2665, 3403, 3649, 5395, 5785, 7387, 17015, 18245, 36935, 44239, 47437, 96031, 221195, 237185, 302867, 480155, 1514335, 3937271, 19686355]

約数ペア:

[(1, 19686355), (5, 3937271), (13, 1514335), (41, 480155), (65, 302867), (83, 237185), (89, 221195), (205, 96031), (415, 47437), (445, 44239), (533, 36935), (1079, 18245), (1157, 17015), (2665, 7387), (3403, 5785), (3649, 5395)]